Part 2 of the Regulations amends the Building Regulations 2010 (“the 2010 Regulations”) to insert provisions relating to target fabric energy efficiency (“TFEE”) rates and new dwellings. Regulation 4 amends regulation 25 of the 2010 Regulations requiring the Secretary of State to approve TFEE rates; regulation 5 inserts regulation 26A requiring that new dwellings must not exceed the TFEE rate; regulation 6 inserts regulation 27A setting out the procedure to be followed by the person carrying out the work to submit evidence regarding the TFEE rates to the local authority; regulation 8 inserts a definition of fabric energy efficiency into regulation 35 of the 2010 Regulations and regulation 9 sets out the transitional provisions for the amendments to the 2010 Regulations